The optional passive: true option of addEventListener signals the browser that the handler is not going to call preventDefault. There are some events like touchmove on mobile devices when the user moves their finger across the screen , that cause scrolling by default, but that scrolling can be prevented using preventDefault in the handler.
So when the browser detects such event, it has first to process all handlers, and then if preventDefault is not called anywhere, it can proceed with scrolling. The passive: true options tells the browser that the handler is not going to cancel scrolling.
Then browser scrolls immediately providing a maximally fluent experience, and the event is handled by the way. For some browsers Firefox, Chrome , passive is true by default for touchstart and touchmove events. The property event. You remember in the chapter Bubbling and capturing we talked about event. Sometimes we can use event. By default the browser on contextmenu event right mouse click shows a context menu with standard options. We can prevent it and show our own, like this:.
The problem is that when we click on elem , we get two menus: the button-level and the event bubbles up the document-level menu. How to fix it? Now the button-level menu works as intended. The relative path to the HTML file to show in a popup. If set to the empty string '' , no popup is shown. The callback parameter looks like: tab: tabs. Skip to content. Welcome What's new in Chrome extensions Getting started. What are extensions?
What are themes? Frequently asked questions Extensions quality guidelines FAQ. Extension development overview Manifest file format Architecture overview Declare permissions Design the user interface Debugging extensions Samples.
Message passing Content scripts Match patterns Using promises Cross-origin isolation. Migrating from background pages to service workers. Protect user privacy Declare permissions and warn users Stay secure Accessibility a11y Localization message formats Give users options.
About Manifest V2 Getting started. Frequently asked questions. Message passing Content scripts Manage events with background scripts Match patterns Cross-origin isolation. Migrate to event-driven background scripts.
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Thanks a lot! Search Support Search. Learn More. Chosen solution Go to about:config yes, it works on mobile. This caused an enormous amount of grief for me and I found the solution by chance. To change the name of a PDF file you want to download, right-click the download link and select Save As. However, downloading a PDF is still possible. Change Default Apps Conclusion.
Windows App Settings. Windows Default Apps Settings. Change Default Email App. Resetting and Other Default Apps Settings. Choose Apps for File Types. Setup Apps Based on Protocols. Set Defaults by Apps. File Types Supported by App. Default Programs Settings from Control Panel. Double Click to Choose App. Set Default Apps. Change Default App.
Sub Menu for Open With Option. Conclusion Many times, you will receive unknown files from your colleagues or friends and you cannot open in Windows 10 default apps. About Editorial Staff Editorial Staff at WebNots are team members who love to build websites and share the learning with webmasters community.
May 20,
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